[  512.705716] bond0: (slave eth0): making interface the new active one
[  512.705789] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.956114] bond0: (slave eth0): Releasing backup interface
[  517.060567] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.236825] bond0: (slave eth0): Releasing backup interface
[  521.270786] bond0 (unregistering): Released all slaves